CN110782558A - Differentiated GPS vehicle locking control method - Google Patents
Differentiated GPS vehicle locking control method Download PDFInfo
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- CN110782558A CN110782558A CN201910948457.8A CN201910948457A CN110782558A CN 110782558 A CN110782558 A CN 110782558A CN 201910948457 A CN201910948457 A CN 201910948457A CN 110782558 A CN110782558 A CN 110782558A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00571—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by interacting with a central unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
- B60R25/04—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00896—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
- H04W12/041—Key generation or derivation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
Abstract
The invention discloses a differential GPS vehicle locking control method, belongs to the technical field of GPS loan vehicle locking, and aims to solve the problem that the conventional remote vehicle locking method cannot adapt to different vehicle locking requirements of different whole vehicles and plants for GPS to provide various vehicle locking functions, and the problem that one engine ECU can be matched with a plurality of different whole vehicles and plants by modifying part of calibration values so as to avoid the repeated development of control programs of the ECU. The GPS vehicle locking control method provided by the invention is provided with a plurality of calibration parameters, and the calibration parameters preset in the engine ECU are modified, so that each whole vehicle factory and dealer can have own exclusive vehicle locking strategy and different vehicle locking/unlocking performances, the basic vehicle locking requirements of the whole vehicle factory and dealer can be met, and the repeated development of engine ECU programs can be avoided.
Description
Technical Field
The invention relates to the technical field of GPS loan car locking, in particular to a method capable of meeting the differentiated GPS car locking requirements of different whole car factories.
Background
In the existing GPS vehicle locking scheme, no method can meet the following requirements: aiming at the condition that an engine ECU does not need to develop a program again, the locking device can adapt to different vehicle locking requirements of different whole vehicle factories on a GPS.
A representative method is described in "a method for remotely locking a vehicle" (CN 108944785A). Usually, the GPS controller and the engine ECU are connected by a CAN bus. The center of the platform remotely sends a control signal to the GPS controller, the GPS sends the signal to the ECU, and the signal interaction is carried out between the GPS and the ECU, so that the following functions are realized:
(1) the GPS sends a vehicle locking command to the ECU, and the ECU limits the rotating speed or torque of the engine after receiving the command.
(2) The GPS sends an unlocking command to the ECU, and the engine returns to normal after the ECU receives the command.
(3) In order to prevent the GPS from being illegally replaced, periodic verification information between the GPS and the ECU is protected, and when the verification is incorrect, the engine can be limited in rotating speed or torque; when the verification is correct, the engine will return to normal.
The control method in the prior art is developed only aiming at a specific GPS and a specific engine ECU, the specific performance of locking the vehicle, the periodic verification method for preventing the GPS from being illegally dismantled, the ID number of CAN communication and other contents are fixedly developed, and the contents cannot be changed after the development is finished. When one engine ECU needs to be matched with a plurality of GPS specified by different vehicle factories, the control program of the engine ECU needs to be developed for a plurality of times according to different actual requirements of the different vehicle factories. The development and test period is long and the development cost is high. Along with the increase of different GPS vehicle locking requirements, the size of an engine ECU control program is gradually increased, and the error rate is improved.
Disclosure of Invention
In order to solve the problem that the conventional remote vehicle locking method cannot adapt to different vehicle locking requirements of different whole factories on a GPS (global positioning system) to provide various vehicle locking functions, one engine ECU (electronic control unit) can be matched with a plurality of different whole factories by modifying part of calibration values, and the problem of repeated development of control programs of the ECU is avoided. The invention provides a differentiated GPS vehicle locking control method.
The control method comprises the following specific operation steps:
① GPS Lock function activation/deactivation
1) Firstly, a password request for activating/closing the GPS vehicle locking function is issued from the center of a GPS platform, then a GPS controller forwards the request to an ECU through an activated/closed request message address (FrmMgr _ infoIDGPSCTLReqUI _ C) issued by the platform, after receiving the request for activating or closing the password, the ECU sends a randomly generated random number to a GPS module message address (FrmMgr _ infoIDGPSCTLRndUI _ C) through the ECU and sends the generated random number to the GPS controller in a message form, meanwhile, the ECU calculates the GPS vehicle locking function activation/closing password according to the random number by adopting a set algorithm, after receiving the random number sent in the message form, the GPS controller calculates the GPS vehicle locking function activation/closing password by adopting the same algorithm and sends the GPS vehicle locking function activation/closing password to the ECU through a function activation/closing message address (FrmMgr _ infoIDGPSCTLUI _ C), if the GPS vehicle locking function activation/closing password calculated by the ECU is the same as the received GPS vehicle locking function activation/closing password, the ECU enters an activation/closing state of the GPS vehicle locking function;
the platform issues an activated/closed request message address (FrmMgr _ infoIDGPSCtlReqUI _ C), the ECU sends a randomly generated random number to a GPS module message address (FrmMgr _ infoIDGPSCtlRndUI _ C) and a message address (FrmMgr _ infoIDGPSCtlUI _ C) for function activation and closing as calibration parameters;
the calculation formula adopted by the GPS car locking function activation/closing password is as follows:
(multiple byte 1 × random number byte 1+ multiple byte 2 × random number byte 2 … multiple byte n × random number byte n) ⊕ GPS _ datAct iveBaseUW _ C
Wherein, the multiple byte, namely the multiplication multiple GPS _ datActiveFactorUB _ CA is a one-dimensional table of multiplication multiples of n bytes, and different calibration modifications can be carried out;
the GPS _ datActiveBaseUW _ C can be subjected to different calibration modifications for an exclusive OR base.
② handshake heartbeat tamper proof check function
When the ECU is in a GPS vehicle locking function activation state, the ECU sends a message address (FrmMgr _ infoIDGPSHAnd UI _ C) for handshake check through the generated random number sent by the ECU to the GPS controller in a message form, the GPS controller calculates a handshake check code according to the received random number through a set algorithm, then feeds back the message address (FrmMgr _ infoIDGPSReplyUI _ C) of the handshake check code calculated through the GPS in a message form to the ECU, and simultaneously the ECU calculates the handshake check code according to the started random number by adopting the same algorithm as the GPS controller;
wherein, the calibration parameters are as follows:
the ECU sends the generated random number to be used as the message address (FrmMgr _ infoIDGPSHAndUI _ C) for handshake check and
the message address (FrmMgr _ infoIDGPSReplyUI _ C) of the handshake check code calculated by the GPS;
the handshake check algorithm is as follows:
an N-byte 16-system random number sent by the ECU is assigned to the byte array bytHash [ n ]
1) The initial handshake check code dwHash is assigned a value of 0
2) Taking the first byte random number, calculating a first handshake check code according to the following formula, and assigning the first handshake check code to handshake check code dwHash again;
dwHash ═ GPS _ datdhandspreaub _ C (hash algorithm multiplication times) × dwHash + byhash [1 ];
3) and taking the random numbers of the rest bytes for calculation until the character length (GPS _ datHandLenUB _ C) of the hash algorithm is reached, and calculating the final handshake check code. The hash algorithm character length (GPS _ datHandLenUB _ C) is the number of bytes sent by the ECU;
the hash algorithm character length (GPS _ datHandLenUB _ C) and the hash algorithm multiplication factor (GPS _ datHandBaseUB _ C) are calibrated values and can be adjusted according to different manufacturers.
After the first handshake anti-disassembly check is completed, the GPS controller and the engine ECU perform handshake anti-disassembly check according to a set period, namely a heartbeat check time interval (FrmMgr _ TIPeriodGPSHAnd UW _ C), namely handshake heartbeat anti-disassembly check.
The heartbeat check time interval (FrmMgr _ tiperoddgps shandu w _ C) is a calibration parameter.
③ forced locking vehicle
The GPS platform center issues a forced locking instruction to the GPS controller, the GPS controller sends the forced locking instruction to the ECU in a message form through a message address (FrmMgr _ infoIDGPSLockUI _ C) of the forced locking/cancelling function, and the ECU limits the rotating speed of the engine to a set rotating speed when the vehicle is powered on next time after receiving the forced locking instruction, so that forced locking is realized.
And forcing a message address (FrmMgr _ infoIDGPSLockUI _ C) of the vehicle locking/canceling function to be a calibration parameter.
④ Emergency Start in forced Lock vehicle State
When the vehicle cannot be started by the GPS forced locking, the vehicle can be stopped in an dangerous zone, when a user starts a key door, after the starting time of the key door is longer than the time limit of an emergency starting signal (IgnSwtCD _ tiT50EmerUW _ C), an emergency starting function is started, and at the moment, the engine is allowed to be normally started in a specified time, namely single emergency starting time (GPS _ tiT50EmerMaxUW _ C) and in a specified starting number, namely the emergency starting number (GPS _ numEmerMaxUW _ C), so that the engine can be driven out of the dangerous zone, and the safety of the forced locking is ensured.
The time limit of the emergency starting signal (IgnSwtCD _ tiT50EmerUW _ C), the single emergency starting time (GPS _ tiT50EmerMaxUW _ C) and the emergency starting times (GPS _ numEmerMaxUW _ C) are calibration parameters.
The differentiated GPS vehicle locking control can be completed by modifying and adjusting part or all of the calibration parameters.
The invention has the beneficial effects that:
the engine ECU is developed according to the invention, so that the basic vehicle locking requirements of a whole vehicle factory and a dealer can be met, and the repeated development of an engine ECU program can be avoided. When the GPS is matched, certain calibration parameters preset in an engine ECU are modified, and each whole automobile factory and dealer can have own exclusive automobile locking strategy and different automobile locking/unlocking performances. Therefore, the adaptability of the engine ECU matched with different GPS is improved, and an operable industry standard is provided for the development of the GPS vehicle locking function.
Drawings
FIG. 1 shows an engine ECU and GPS controller connection.
Detailed Description
The technical solution of the present invention is further explained and illustrated below by way of specific examples.
In the present embodiment, the engine ECU and the GPS controller are bound to each other via the CAN bus, as shown in fig. 1.
① GPS Lock function activation/deactivation
1) Firstly, a password request for activating/closing the GPS vehicle locking function is issued from the center of a GPS platform, then a GPS controller forwards the request to an ECU through an activated/closed request message address (FrmMgr _ infoIDGPSCTLReqUI _ C) issued by the platform, after receiving the request for activating or closing the password, the ECU sends a randomly generated random number to a GPS module message address (FrmMgr _ infoIDGPSCTLRndUI _ C) through the ECU and sends the generated random number to the GPS controller in a message form, meanwhile, the ECU calculates the GPS vehicle locking function activation/closing password according to the random number by adopting a set algorithm, after receiving the random number sent in the message form, the GPS controller calculates the GPS vehicle locking function activation/closing password by adopting the same algorithm and sends the GPS vehicle locking function activation/closing password to the ECU through a function activation/closing message address (FrmMgr _ infoIDGPSCTLUI _ C), if the GPS vehicle locking function activation/closing password calculated by the ECU is the same as the received GPS vehicle locking function activation/closing password, the ECU enters the activation/deactivation state of the GPS locking function.
The algorithm adopted in the embodiment is specifically as follows:
GPS _ datactvectorub _ CA (multiplication factor): shown below is a one-dimensional table of multiplication factors of 8 bytes. The decimal multiples in the table are for example as follows, different calibration modifications can be made:
| byte(s) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Multiple of | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 |
GPS _ datActiveBaseUW _ C (exclusive or base): the xor operand value, for example 12345 in decimal notation, may be modified differently in calibration.
If the 8 decimal "random number" sent by the ECU is
| Byte(s) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Random number | 78 | 56 | 34 | 12 | 00 | 00 | 00 | 00 |
Then the calculation is performed by setting an algorithm whose calculation formula is as follows:
(multiple byte 1 × random number byte 1+ multiple byte 2 × random number byte 2+ multiple byte 3 × random number byte 3+
Multiple byte 4 × random number byte 4+ multiple byte 5 × random number byte 5+ multiple byte 5 × random number byte 6+
The multiple byte 7 × random number byte 7+ the multiple byte 8 × random number byte 8) ^ exclusive or radix ^12345 (10 × 78+9 × 56+8 × 34+7 × 12+6 × 0+5 × 0+4 × 0+3 × 0) ^ 12345.
From the final calculation result, the "activation/deactivation password" is obtained.
② handshake heartbeat tamper proof check function
When the ECU is in a GPS vehicle locking function activation state, the ECU sends a message address (FrmMgr _ infoIDGPSHAnd UI _ C) for handshake check through the generated random number sent by the ECU to the GPS controller in a message form, the GPS controller calculates a handshake check code according to the received random number through a set algorithm, then feeds back the message address (FrmMgr _ infoIDGPSReplyUI _ C) of the handshake check code calculated through the GPS in a message form to the ECU, and simultaneously the ECU calculates the handshake check code according to the started random number by adopting the same algorithm as the GPS controller;
the handshake check is specifically as follows:
a6-bit 16-ary "random number" sent by the ECU is
| Byte(s) | 1 | 2 | 3 | 4 | 5 | 6 |
| Random number | 0 | 0 | 3 | F | F | 6 |
The assignment of this random number to the byte array bybhash [6] ═ 0, 0, 3, F, 6} calculation is as follows:
1) the initial handshake check code dwHash is assigned a value of 0
2) Taking the first byte random number, calculating a first handshake check code according to the following formula, and assigning the first handshake check code to handshake check code dwHash again;
dwHash ═ GPS _ datdhandspreaub _ C (hash algorithm multiplication times) × dwHash + byhash [1 ];
3) and taking the random numbers of the rest bytes for calculation until the GPS _ datHandLenUB _ C (character length of a hash algorithm) is reached, and calculating the final handshake check code.
The usage code is as follows:
the character length of the hash algorithm and the multiplication multiple of the hash algorithm are calibrated values and can be adjusted according to different manufacturers.
After the first handshake anti-disassembly check is completed, the GPS controller and the engine ECU perform handshake anti-disassembly check according to a set period, namely a heartbeat check time interval (FrmMgr _ TIPeriodGPSHAnd UW _ C), namely handshake heartbeat anti-disassembly check.
③ forced locking vehicle
The GPS platform center issues a forced locking instruction to the GPS controller, the GPS controller sends the forced locking instruction to the ECU in a message form through a message address (FrmMgr _ infoIDGPSLockUI _ C) of the forced locking/cancelling function, and the ECU limits the rotating speed of the engine to a set rotating speed when the vehicle is powered on next time after receiving the forced locking instruction, so that forced locking is realized.
④ Emergency Start in forced Lock vehicle State
When the vehicle cannot be started by the GPS forced locking, the vehicle can be stopped in an dangerous zone, when a user starts a key door, after the starting time of the key door is longer than the time limit of an emergency starting signal (IgnSwtCD _ tiT50EmerUW _ C), an emergency starting function is started, and at the moment, the engine is allowed to be normally started in a specified time, namely single emergency starting time (GPS _ tiT50EmerMaxUW _ C) and in a specified starting number, namely the emergency starting number (GPS _ numEmerMaxUW _ C), so that the engine can be driven out of the dangerous zone, and the safety of the forced locking is ensured.
Claims (1)
1. A differentiated GPS vehicle locking control method comprises the following specific operation steps:
① GPS Lock function activation/deactivation
Firstly, a password request for activating/closing the GPS vehicle locking function is issued from the center of a GPS platform, then a GPS controller issues an activated/closed request message address FrmMgr _ infoIDGPSCTLReqUI _ C through the platform to forward the request to an ECU, after the ECU receives the request for activating or closing the password, the ECU sends a randomly generated random number to a GPS module message address FrmMgr _ infoIDGPSCtlRdUI _ C to send the generated random number to the GPS controller in a message form, meanwhile, the ECU calculates the GPS vehicle locking function activation/closing password by adopting a set algorithm according to the random number, after receiving the random number sent in the message form, the GPS controller calculates the GPS vehicle locking function activation/closing password by adopting the same algorithm and sends the GPS vehicle locking function activation/closing password to the ECU by the function activation and closing message address FrmMgr _ infoIDGPSCUI _ C, if the GPS vehicle locking function activation/closing password calculated by the ECU is the same as the received GPS vehicle locking function activation/closing password, the ECU enters an activation/closing state of the GPS vehicle locking function;
the platform issues an activated/closed request message address FrmMgr _ infoIDGPSCtlReqUI _ C, ECU and sends a randomly generated random number to a GPS module message address FrmMgr _ infoIDGPSCtlRddUI _ C and a message address FrmMgr _ infoIDGPSCTLUI _ C for function activation and closing as calibration parameters;
the calculation formula adopted by the GPS car locking function activation/closing password is as follows:
(multiple byte 1 × random number byte 1+ multiple byte 2 × random number byte 2 … multiple byte n × random number byte n) ⊕ GPS _ datAct iveBaseUW _ C
Wherein, the multiple byte, namely the multiplication multiple GPS _ datActiveFactorUB _ CA is a one-dimensional table of multiplication multiples of n bytes, and different calibration modifications can be carried out;
the GPS _ datActiveBaseUW _ C can be subjected to different calibration modifications for an exclusive OR base.
② handshake heartbeat tamper proof check function
When the ECU is in a GPS vehicle locking function activation state, the ECU sends a generated random number to a message address FrmMgr _ infoIDGPSHAnd UI _ C used for handshake check through the ECU when the vehicle is electrified every time, sends the random number to a GPS controller in a message form, the GPS controller calculates handshake check codes through a set algorithm according to the received random number, then feeds back the message address FrmMgr _ infoIDGPSReplyUI _ C of the handshake check codes calculated through the GPS in a message form to the ECU, and simultaneously the ECU calculates the handshake check codes according to the sent random number by the same algorithm as that of the GPS controller, if the two handshake check codes are equal, the first handshake anti-disassembly check is completed after the electrification, otherwise, the handshake anti-disassembly check fails, and the ECU limits the rotating speed of the engine to an idle speed to realize the GPS vehicle locking;
wherein, the calibration parameters are as follows:
the ECU sends the generated random number to be used as the message address Frmmgr _ infoIDGPSHAndUI _ C and Frmmgr _ infoidGPSHAndUI _ C for handshake check
The message address FrmmMgr _ infoIDGPSReplyUI _ C of the handshake check code calculated by the GPS;
the handshake check algorithm is as follows:
an N-byte 16-system random number sent by the ECU is assigned to the byte array bytHash [ n ]
1) The initial handshake check code dwHash is assigned a value of 0
2) Taking the first byte random number, calculating a first handshake check code according to the following formula, and assigning the first handshake check code to handshake check code dwHash again;
dwHash ═ GPS _ datdhandspreaub _ C (hash algorithm multiplication times) × dwHash + byhash [1 ];
3) and taking the random numbers of the rest bytes for calculation until the character length GPS _ datHandLenUB _ C of the hash algorithm is reached to calculate the final handshake check code. The hash algorithm character length GPS _ datHandLenUB _ C is the number of bytes sent by the ECU;
the hash algorithm character length GPS _ datHandLenUB _ C and the hash algorithm multiplication multiple GPS _ datHandBaseUB _ C are calibration values and can be adjusted according to different manufacturers.
After the first handshake anti-disassembly check is completed, the GPS controller and the engine ECU perform handshake anti-disassembly check according to a set period, namely a heartbeat check time interval FrmMgr _ TIPeriodGPSHAnd UW _ C, namely handshake heartbeat anti-disassembly check, if a user removes the GPS or uses a GPS simulator during the handshake heartbeat anti-disassembly check, the handshake anti-disassembly check fails, and the ECU limits the rotating speed to an idle speed during the next start of the engine, so that the GPS vehicle locking is realized.
The heartbeat check time interval FrmMgr _ tiperoddgpshanduw _ C is a calibration parameter.
③ forced locking vehicle
The GPS platform center issues a forced locking instruction to the GPS controller, the GPS controller sends the forced locking instruction to the ECU in a message form through a message address FrmMgr _ infoIDGPSLockUI _ C of the forced locking/canceling function, and the ECU limits the rotating speed of the engine to a set rotating speed when the vehicle is powered on next time after receiving the forced locking instruction, so that forced locking is realized.
And the message address FrmMgr _ infoIDGPSLockUI _ C of the forced locking/canceling function is a calibration parameter.
④ Emergency Start in forced Lock vehicle State
When the vehicle cannot be started by the GPS forced locking, the vehicle may be stopped in an unsafe zone, and when a user starts a key door, after the starting time of the key door is longer than the time of the emergency starting signal time limit IgnSwtCD _ tiT50EmerUW _ C, the emergency starting function is started, at the moment, the engine is allowed to be normally started in a specified time, namely single emergency starting time GPS _ tiT50EmerMaxUW _ C) and in a specified starting time, namely the emergency starting time GPS _ numEmerMaxUW _ C), so that the engine can be driven out of the dangerous zone, and the safety of the forced locking is ensured.
An emergency start signal time limit IgnSwtCD _ tiT50EmerUW _ C, a single emergency start time GPS _ tiT50EmerMaxUW _ C) and an emergency start frequency GPS _ numEmerMaxUW _ C) are calibration parameters;
the differentiated GPS vehicle locking control can be completed by modifying and adjusting part or all of the calibration parameters.
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| CN113386702A (en) * | 2021-07-01 | 2021-09-14 | 东风华神汽车有限公司 | Method for passively locking vehicle |
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